django 1.9 createsuperuser bypass the password validation checking

After creating the superuser with a complex password, you can set it to something easier in the shell (./ shell):

from django.contrib.auth.models import User
user = User.objects.get(username='your_user')

You can change the AUTH_PASSWORD_VALIDATORS setting in in your dev environment. See the docs:

It is pretty straightforward: you will recognize the validators that caused your warning messages.